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Author Just ordered
DaveyLC
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Registered: 8th Oct 08
Location: Berkshire
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19th Apr 13 at 16:20   View User's Profile U2U Member Reply With Quote
that's the servo freq
Steve
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Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
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19th Apr 13 at 17:17   View Garage View User's Profile U2U Member Reply With Quote
actually reduced the gains, on the roll axis anyway, the pitch was fine, much smoother now, it was over compensating on the angle for the roll
DaveyLC
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21st Apr 13 at 21:09   View User's Profile U2U Member Reply With Quote
We've had gorgeous weather the last few days

You might like this Steve:

http://www.youtube.com/watch?v=R1Dn0T5lFzg&feature=youtu.be
3CorsaMeal
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Registered: 11th Apr 02
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23rd Apr 13 at 17:29   View User's Profile U2U Member Reply With Quote
Is it true you are only going to be able to fly these in the boundary of your own land or at special clubs. Something someone said to me. No idea of the source.
DaveyLC
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25th Apr 13 at 08:12   View User's Profile U2U Member Reply With Quote
There is no current regulation, but its in the pipe line
Gary
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Registered: 22nd Nov 06
Location: West Yorkshire
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25th Apr 13 at 09:03   View Garage View User's Profile U2U Member Reply With Quote
Bit harsh really. Licencing them might be a better idea but that would cost money so i can see them just banning them.

Still adamant these things need to be raced.
Steve
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25th Apr 13 at 09:10   View Garage View User's Profile U2U Member Reply With Quote
dont see why there needs to be anything new, people have been flying rc controlled planes and stuff for years with cameras on them
Gary
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25th Apr 13 at 09:13   View Garage View User's Profile U2U Member Reply With Quote
Some MP has prob been caught cheating on his Mrs bu someone with one
DaveyLC
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25th Apr 13 at 10:12   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Steve
dont see why there needs to be anything new, people have been flying rc controlled planes and stuff for years with cameras on them


Its "THE TERRORISTS" <scary hand wave>

[Edited on 25-04-2013 by DaveyLC]
FlaFFy_91
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Registered: 30th Sep 08
Location: Formby, Merseyside
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25th Apr 13 at 12:09   View Garage View User's Profile U2U Member Reply With Quote
I can't be bothered to read the whole thread so this may of been covered but.... How are these controlled?? Just by means of a normal radio transmitter? If so how can you see them if your flying these huge distances out or up? Or do you get a live feed off the camera to a screen on your transmitter or phone?
Steve
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25th Apr 13 at 12:11   View Garage View User's Profile U2U Member Reply With Quote
rc controller, and you get a fpv feed if you are going long distance to watch out a camera on the drone either using goggles or a small lcd screen
DaveyLC
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25th Apr 13 at 13:08   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by FlaFFy_91
I can't be bothered to read the whole thread so this may of been covered but.... How are these controlled?? Just by means of a normal radio transmitter? If so how can you see them if your flying these huge distances out or up? Or do you get a live feed off the camera to a screen on your transmitter or phone?


Video transmitter on model, RC transmitter and Video receiver on the ground

simples.
Steve
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25th Apr 13 at 22:14   View Garage View User's Profile U2U Member Reply With Quote
Bought some tbs 30A escs so decided to rebuild the quad

Soldered them on and finished off the solders with the potting compound



Naza and receiver in etc



ezOSD current sensor, ImmersionRC fpv tx and wiring in place



Ready to roll, ezOSD mounted nicely underneath the top plate, you can just about make out the buttons



Fitted some new RC timer CF 10x5 props



Decided to lock the gimbal so it only levels on forwards backwards motion, i like the rolling effect in videos so this should mean the footage is more like a plane and means i can scrap some weight off the gimbal, eg the servo. I have also mounted the gimbal with 4 anti vibration bobbins, will be interesting to see if they have an effect

Finally underneath, 4x new team black sheep 30A escs with simonk firmware fitted too
Gary
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Registered: 22nd Nov 06
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26th Apr 13 at 06:22   View Garage View User's Profile U2U Member Reply With Quote
Escs?
Steve
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26th Apr 13 at 06:42   View Garage View User's Profile U2U Member Reply With Quote
Speed controllers, they control the pulse signals to the motors
Gary
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26th Apr 13 at 08:47   View Garage View User's Profile U2U Member Reply With Quote
Steve
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26th Apr 13 at 20:10   View Garage View User's Profile U2U Member Reply With Quote
After reading a guide on RC gruops I ordered a couple of those SAW filters to do the GPS filter mod, the benefits of this are to filter as much as the background RF noise as possible to get a cleaner quicker lock. Most GPS units have one of these but for some reason DJI skimped on this part which only costs a couple of quid.

The pieces are very small, as highlighted by this image of the filter next to a 5p



Cut the trace and scraped some of the green coating to expose and earth point



Soldered some wires to it, I used stranded wire for this rather than a piece of tinned core, because I wanted it to remain flexible and not pull the pads off the SAW filter



Soldered the one wire to the RF in on the correct leg of the chip



Rest of them soldered down and filter in place



Then simply added some small pieces of sticky foam to finish off



Testing, seems to work ok, but it was ok before so i dont really have much to go on having said that I can now get a lock indoors it seems. I live in the country so GPS signal shouldnt be an issue here but main reason for doing it was incase i did ever take it anywhere RF noisy.

[Edited on 26-04-2013 by Steve]
John
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Registered: 30th Jun 03
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26th Apr 13 at 21:12   View User's Profile U2U Member Reply With Quote
Any reason you didn't take an earth from elsewhere on the board?
Steve
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26th Apr 13 at 21:36   View Garage View User's Profile U2U Member Reply With Quote
you mean as opposed to the earth pin on the chip? mainly because its the shortest path from the filters earth to keep the wires as short as possible, impedance is pretty important for this mod

[Edited on 26-04-2013 by Steve]
John
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26th Apr 13 at 22:18   View User's Profile U2U Member Reply With Quote
From the chip or wherever but yes. Fair enough. Enameled wire might be handy for bits like that. There may also be some specific reason not to use it on quads though.
DaveyLC
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Registered: 8th Oct 08
Location: Berkshire
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27th Apr 13 at 09:47   View User's Profile U2U Member Reply With Quote
Can I just ask Steve why did you fit the SAW filter?

Your VTX is 5.8ghz so you don't have to worry about close frequency swamping or harmonics in relation to GPS?
Steve
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27th Apr 13 at 09:55   View Garage View User's Profile U2U Member Reply With Quote
Its not meant to be to filter that more general atmospheric noise which the majority is at the 1576.62 mhz range.

[Edited on 27-04-2013 by Steve]
DaveyLC
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27th Apr 13 at 09:55   View User's Profile U2U Member Reply With Quote
Can't say I've ever had a problem getting a GPS fix with mine? Maybe the aliens aren't listening to my thoughts where I fly
Steve
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27th Apr 13 at 09:57   View Garage View User's Profile U2U Member Reply With Quote
Mines been ok too but there have been quite a few reports of it taking 3mins plus to get a fix, im guessing possibly in built up city areas or from other interference from cameras etc

Here is the thread if you fancy a read

http://www.rcgroups.com/forums/showthread.php?t=1863430

[Edited on 27-04-2013 by Steve]
DaveyLC
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27th Apr 13 at 09:59   View User's Profile U2U Member Reply With Quote
Like I said.. Mine works

Now if you're fails you will forever be thinking "Did I fuck something up when I tinkered?"..

If it ain't broke don't fuck it.

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